remove pyqt5

old-commit-hash: bb02a565b574a8935089bfc1155a3b8ee8af3e87

Pipfile

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:99e558b27266e2f7f6df43627f7425df9257b4dda7a9265eff420ae16a252d43
-size 2028
+oid sha256:89afb483aeabfef85ae48aeae48a4b4bd09135da0ef21da284025c061c43e700
+size 2016

Pipfile.lock

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:4501f284a08bfd74ce86bd4b99ca731e231e7e9201492bb546ccc65fd48fc661
-size 165096
+oid sha256:98b021dbf279099f0b8f2e62b3bfcdaf80300e5773a4962855e48f76e522b80e
+size 162807

tools/replay/lib/ui_helpers.py

@@ -109,10 +109,6 @@ def draw_lead_on(img, closest_x_m, closest_y_m, calibration, color, sz=10, img_o
   return u, v
 
 
-if platform.system() != 'Darwin':
-  matplotlib.use('QT4Agg')
-
-
 def init_plots(arr, name_to_arr_idx, plot_xlims, plot_ylims, plot_names, plot_colors, plot_styles, bigplots=False):
   color_palette = { "r": (1,0,0),
                     "g": (0,1,0),